Finding the Fourth Proportional to 37,839.45, 52,218.42 and 21,933.12

Step by Step Solution

1. Step 1: Write the proportion equation
   37,839.45 : 52,218.42 = 21,933.12 : x
2. Step 2: Convert to fraction form
   37,839.45/52,218.42 = 21,933.12/x
3. Step 3: Cross multiply
   37,839.45x = 52,218.42 × 21,933.12
4. Step 4: Simplify right side
   37,839.45x = 1,145,312,872.07
5. Step 5: Solve for x
   x = 1,145,312,872.07/37,839.45
6. Step 6: Final answer
   x = 30,267.69